Singing super-group The Shock T’s have performed in Charleston so many times, we forget they actually live in Chicago. They’re returning for their third Piccolo Spoleto performance May 31-June 2, and they recently posted a video to encourage local audiences to attend their show. Their goal? Their third “A” review from the City Paper. And if they don’t get it, well, you may not want to know the outcome. Let’s just hope they get their “A.”